Inventor
Hakuzo Tani
Inventor
Takatsuki, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus40%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them20%
C03CChemical composition of glasses, glazes or vitreous enamels10%
G08BSignalling systems, e.g. personal calling systems10%
H04NPictorial communication, e.g. television10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
6,280,848'Antireflection coating'20016,190,013'Polarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitter'20016,155,685'Projector'20005,967,635'Polarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitter'19994,921,760'Anti-reflection coating of optical part made of synthetic resin'19904,784,467'Multi-layered anti-reflection coating'19884,742,236'Flame detector for detecting phase difference in two different wavelengths of light'19884,387,960'Multi-layer anti-reflection coating'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1990Patents assigned to MINOLTA CAMERA KK (4)· patent assignee history
1983Based in Sakai, JP· patent location history
1988–2001Based in Takatsuki, JP· patent location history
1999–2001Patents assigned to MINOLTA CO LTD (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINOLTA CAMERA KK | 4 | 1983–1990 |
| MINOLTA CO LTD | 4 | 1999–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Takatsuki, JP | 7 | 1988–2001 |
| Sakai, JP | 1 | 1983 |